This makes painting much easier and more natural than it would be with a typical mouse. Conversely, the lighter you brush, the lighter and softer your brush strokes will be. The harder you push, the stronger your brush strokes will be. I have an older model Wacom drawing tablet, which works well with Photoshop and the mixer brush tool, because Wacom tablets have pressure sensitivity that detects how hard you are pressing down on the tablet. It is relatively easy, but there are some details that will make a difference in how realistic your painting appears.
However, the mixer brush is a fantastic tool that you can use to turn an existing photograph into a digital painting. It’s difficult for any software program to mimic the realistic effect of painting. Photoshop has always had a brush tool, and it has been mainly used for blending effects and masks.